Hello, All Agreeing with what has been mentioned. Our freezer experience is the same as others are mentioning. We set our temp to -35, and find that there are consistent temperature spikes in ambient air, but only above -22 for short periods of time (~20min).
We also add 1 or 2 additional loggers into items we freeze (in a furniture drawer, in the center of a textile tube, in the pocket of a garment bag, inside a box with a frame) and our experience is the same as Alans: the temperature changes are significantly less when buffered inside of something - there was no cause for concern with the temperature spikes. Julie On Wednesday, December 12, 2018 at 2:22:45 PM UTC-8, Todd Holmberg wrote: > > Hello Pestlist, > > I have a question related to freezing treatment temperatures. > > At the museum I work at, we recently put a data logger in our freezer. We > took the readout this morning, and now have our first chart showing the > temperature conditions inside over the course of a full 7-day week. > Something came up on the readout that I wanted to run past this group and > see if anyone had any opinions on it. > > The "base/normal" temp in the freezer is -28 F, and it holds that pretty > steady. There were 8 temp spikes though. The doors remained shut the > entire week, and my guess is the spikes are related to a defrost cycle. > The spikes were all virtually identical and lasted 55 minutes. The temp > went from -28 to -14, then back to -28, with about 20-25 minutes of temps > warmer than -22 (I have heard -22 F is a significant temp relating > to freezing effectiveness- is that true?). > > Does anyone have an opinion on whether or not spikes where > the temp rises between -22 F and -14 F for 20-25 minutes would have a > significant affect on a freezing treatment? My guess is there will be > approx. 10 of these spikes per week, but we will see about that as > more weekly charts come in. > > If anyone has an opinion or thoughts they would be appreciated. > > Thanks, > Todd > -- You received this message because you are subscribed to the Google Groups "Museumpests" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/pestlist. To view this discussion on the web visit https://groups.google.com/d/msgid/pestlist/dd2219e5-2a0c-450d-8e9e-cec13df5e844%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
